<?xml version="1.0" encoding="UTF-8"?>
<dxl:DXLMessage xmlns:dxl="http://greenplum.com/dxl/2010/12/">
  <dxl:Comment><![CDATA[
Setup:
create table foo (a int, b int, c int) partition by range(a) (start(1) end (2) every(1));
create table bar (d int, e int, f int) partition by range(d)  (start(1) end (2) every(1));

Objective:
Predicate Filter: a = 10 must be pushed down below Dynamic Table Scan on foo. Also, a Hash Join Alternative
with DPE must be created. 

explain select 1+row_number() over(partition by foo.c) from foo, bar where foo.a = bar.d and bar.d = 10;
                                                                 QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------------
 Gather Motion 3:1  (slice2; segments: 3)  (cost=0.00..862.00 rows=1 width=8)
   ->  Result  (cost=0.00..862.00 rows=1 width=8)
         ->  WindowAgg  (cost=0.00..862.00 rows=1 width=8)
               Partition By: foo.c
               ->  Sort  (cost=0.00..862.00 rows=1 width=4)
                     Sort Key: foo.c
                     ->  Redistribute Motion 3:3  (slice1; segments: 3)  (cost=0.00..862.00 rows=1 width=4)
                           Hash Key: foo.c
                           ->  Hash Join  (cost=0.00..862.00 rows=1 width=4)
                                 Hash Cond: foo.a = bar.d
                                 ->  Dynamic Table Scan on foo (dynamic scan id: 1)  (cost=0.00..431.00 rows=1 width=8)
                                       Filter: a = 10
                                 ->  Hash  (cost=100.00..100.00 rows=34 width=4)
                                       ->  Partition Selector for foo (dynamic scan id: 1)  (cost=10.00..100.00 rows=34 width=4)
                                             ->  Sequence  (cost=0.00..431.00 rows=1 width=4)
                                                   ->  Partition Selector for bar (dynamic scan id: 2)  (cost=10.00..100.00 rows=34 width=4)
                                                         Partitions selected: 0 (out of 1)
                                                   ->  Dynamic Table Scan on bar (dynamic scan id: 2)  (cost=0.00..431.00 rows=1 width=4)
                                                         Filter: d = 10
  ]]>
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              <dxl:Cost StartupCost="0" TotalCost="862.000517" Rows="1.000000" Width="8"/>
            </dxl:Properties>
            <dxl:ProjList>
              <dxl:ProjElem ColId="20" Alias="row_number">
                <dxl:WindowFunc Mdid="0.3100.1.0" TypeMdid="0.20.1.0" Distinct="false" WindowStarArg="false" WindowSimpleAgg="false" WindowStrategy="Immediate" WinSpecPos="0"/>
              </dxl:ProjElem>
              <dxl:ProjElem ColId="2" Alias="c">
                <dxl:Ident ColId="2" ColName="c" TypeMdid="0.23.1.0"/>
              </dxl:ProjElem>
            </dxl:ProjList>
            <dxl:Filter/>
            <dxl:Sort SortDiscardDuplicates="false">
              <dxl:Properties>
                <dxl:Cost StartupCost="0" TotalCost="862.000517" Rows="1.000000" Width="4"/>
              </dxl:Properties>
              <dxl:ProjList>
                <dxl:ProjElem ColId="2" Alias="c">
                  <dxl:Ident ColId="2" ColName="c" TypeMdid="0.23.1.0"/>
                </dxl:ProjElem>
              </dxl:ProjList>
              <dxl:Filter/>
              <dxl:SortingColumnList>
                <dxl:SortingColumn ColId="2" SortOperatorMdid="0.97.1.0" SortOperatorName="&lt;" SortNullsFirst="false"/>
              </dxl:SortingColumnList>
              <dxl:LimitCount/>
              <dxl:LimitOffset/>
              <dxl:RedistributeMotion InputSegments="0,1,2" OutputSegments="0,1,2">
                <dxl:Properties>
                  <dxl:Cost StartupCost="0" TotalCost="862.000517" Rows="1.000000" Width="4"/>
                </dxl:Properties>
                <dxl:ProjList>
                  <dxl:ProjElem ColId="2" Alias="c">
                    <dxl:Ident ColId="2" ColName="c" TypeMdid="0.23.1.0"/>
                  </dxl:ProjElem>
                </dxl:ProjList>
                <dxl:Filter/>
                <dxl:SortingColumnList/>
                <dxl:HashExprList>
                  <dxl:HashExpr>
                    <dxl:Ident ColId="2" ColName="c" TypeMdid="0.23.1.0"/>
                  </dxl:HashExpr>
                </dxl:HashExprList>
                <dxl:HashJoin JoinType="Inner">
                  <dxl:Properties>
                    <dxl:Cost StartupCost="0" TotalCost="862.000512" Rows="1.000000" Width="4"/>
                  </dxl:Properties>
                  <dxl:ProjList>
                    <dxl:ProjElem ColId="2" Alias="c">
                      <dxl:Ident ColId="2" ColName="c" TypeMdid="0.23.1.0"/>
                    </dxl:ProjElem>
                  </dxl:ProjList>
                  <dxl:Filter/>
                  <dxl:JoinFilter/>
                  <dxl:HashCondList>
                    <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
                      <dxl:Ident ColId="0" ColName="a" TypeMdid="0.23.1.0"/>
                      <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                    </dxl:Comparison>
                  </dxl:HashCondList>
                  <dxl:DynamicTableScan PartIndexId="1">
                    <dxl:Properties>
                      <dxl:Cost StartupCost="0" TotalCost="431.000071" Rows="1.000000" Width="8"/>
                    </dxl:Properties>
                    <dxl:ProjList>
                      <dxl:ProjElem ColId="0" Alias="a">
                        <dxl:Ident ColId="0" ColName="a" TypeMdid="0.23.1.0"/>
                      </dxl:ProjElem>
                      <dxl:ProjElem ColId="2" Alias="c">
                        <dxl:Ident ColId="2" ColName="c" TypeMdid="0.23.1.0"/>
                      </dxl:ProjElem>
                    </dxl:ProjList>
                    <dxl:Filter>
                      <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
                        <dxl:Ident ColId="0" ColName="a" TypeMdid="0.23.1.0"/>
                        <dxl:ConstValue TypeMdid="0.23.1.0" Value="10"/>
                      </dxl:Comparison>
                    </dxl:Filter>
                    <dxl:TableDescriptor Mdid="6.25679.1.0" TableName="foo">
                      <dxl:Columns>
                        <dxl:Column ColId="0" Attno="1" ColName="a" TypeMdid="0.23.1.0" ColWidth="4"/>
                        <dxl:Column ColId="2" Attno="3" ColName="c" TypeMdid="0.23.1.0" ColWidth="4"/>
                        <dxl:Column ColId="3" Attno="-1" ColName="ctid" TypeMdid="0.27.1.0" ColWidth="6"/>
                        <dxl:Column ColId="4" Attno="-3" ColName="xmin" TypeMdid="0.28.1.0" ColWidth="4"/>
                        <dxl:Column ColId="5" Attno="-4" ColName="cmin" TypeMdid="0.29.1.0" ColWidth="4"/>
                        <dxl:Column ColId="6" Attno="-5" ColName="xmax" TypeMdid="0.28.1.0" ColWidth="4"/>
                        <dxl:Column ColId="7" Attno="-6" ColName="cmax" TypeMdid="0.29.1.0" ColWidth="4"/>
                        <dxl:Column ColId="8" Attno="-7" ColName="tableoid" TypeMdid="0.26.1.0" ColWidth="4"/>
                        <dxl:Column ColId="9" Attno="-8" ColName="gp_segment_id" TypeMdid="0.23.1.0" ColWidth="4"/>
                      </dxl:Columns>
                    </dxl:TableDescriptor>
                  </dxl:DynamicTableScan>
                  <dxl:PartitionSelector RelationMdid="6.25679.1.0" PartitionLevels="1" ScanId="1">
                    <dxl:Properties>
                      <dxl:Cost StartupCost="10" TotalCost="100" Rows="100" Width="4"/>
                    </dxl:Properties>
                    <dxl:ProjList>
                      <dxl:ProjElem ColId="10" Alias="d">
                        <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                      </dxl:ProjElem>
                    </dxl:ProjList>
                    <dxl:PartEqFilters>
                      <dxl:PartEqFilterElems>
                        <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                      </dxl:PartEqFilterElems>
                    </dxl:PartEqFilters>
                    <dxl:PartFilters>
                      <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
                    </dxl:PartFilters>
                    <dxl:ResidualFilter>
                      <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
                    </dxl:ResidualFilter>
                    <dxl:PropagationExpression>
                      <dxl:ConstValue TypeMdid="0.23.1.0" Value="1"/>
                    </dxl:PropagationExpression>
                    <dxl:PrintableFilter>
                      <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
                        <dxl:Ident ColId="0" ColName="a" TypeMdid="0.23.1.0"/>
                        <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                      </dxl:Comparison>
                    </dxl:PrintableFilter>
                    <dxl:Sequence>
                      <dxl:Properties>
                        <dxl:Cost StartupCost="0" TotalCost="431.000063" Rows="1.000000" Width="4"/>
                      </dxl:Properties>
                      <dxl:ProjList>
                        <dxl:ProjElem ColId="10" Alias="d">
                          <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                        </dxl:ProjElem>
                      </dxl:ProjList>
                      <dxl:PartitionSelector RelationMdid="6.25698.1.0" PartitionLevels="1" ScanId="2">
                        <dxl:Properties>
                          <dxl:Cost StartupCost="10" TotalCost="100" Rows="100" Width="4"/>
                        </dxl:Properties>
                        <dxl:ProjList/>
                        <dxl:PartEqFilters>
                          <dxl:PartEqFilterElems>
                            <dxl:ConstValue TypeMdid="0.23.1.0" Value="10"/>
                          </dxl:PartEqFilterElems>
                        </dxl:PartEqFilters>
                        <dxl:PartFilters>
                          <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
                        </dxl:PartFilters>
                        <dxl:ResidualFilter>
                          <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
                        </dxl:ResidualFilter>
                        <dxl:PropagationExpression>
                          <dxl:ConstValue TypeMdid="0.23.1.0" Value="2"/>
                        </dxl:PropagationExpression>
                        <dxl:PrintableFilter>
                          <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
                            <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                            <dxl:ConstValue TypeMdid="0.23.1.0" Value="10"/>
                          </dxl:Comparison>
                        </dxl:PrintableFilter>
                      </dxl:PartitionSelector>
                      <dxl:DynamicTableScan PartIndexId="2">
                        <dxl:Properties>
                          <dxl:Cost StartupCost="0" TotalCost="431.000063" Rows="1.000000" Width="4"/>
                        </dxl:Properties>
                        <dxl:ProjList>
                          <dxl:ProjElem ColId="10" Alias="d">
                            <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                          </dxl:ProjElem>
                        </dxl:ProjList>
                        <dxl:Filter>
                          <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.96.1.0">
                            <dxl:Ident ColId="10" ColName="d" TypeMdid="0.23.1.0"/>
                            <dxl:ConstValue TypeMdid="0.23.1.0" Value="10"/>
                          </dxl:Comparison>
                        </dxl:Filter>
                        <dxl:TableDescriptor Mdid="6.25698.1.0" TableName="bar">
                          <dxl:Columns>
                            <dxl:Column ColId="10" Attno="1" ColName="d" TypeMdid="0.23.1.0" ColWidth="4"/>
                            <dxl:Column ColId="13" Attno="-1" ColName="ctid" TypeMdid="0.27.1.0" ColWidth="6"/>
                            <dxl:Column ColId="14" Attno="-3" ColName="xmin" TypeMdid="0.28.1.0" ColWidth="4"/>
                            <dxl:Column ColId="15" Attno="-4" ColName="cmin" TypeMdid="0.29.1.0" ColWidth="4"/>
                            <dxl:Column ColId="16" Attno="-5" ColName="xmax" TypeMdid="0.28.1.0" ColWidth="4"/>
                            <dxl:Column ColId="17" Attno="-6" ColName="cmax" TypeMdid="0.29.1.0" ColWidth="4"/>
                            <dxl:Column ColId="18" Attno="-7" ColName="tableoid" TypeMdid="0.26.1.0" ColWidth="4"/>
                            <dxl:Column ColId="19" Attno="-8" ColName="gp_segment_id" TypeMdid="0.23.1.0" ColWidth="4"/>
                          </dxl:Columns>
                        </dxl:TableDescriptor>
                      </dxl:DynamicTableScan>
                    </dxl:Sequence>
                  </dxl:PartitionSelector>
                </dxl:HashJoin>
              </dxl:RedistributeMotion>
            </dxl:Sort>
            <dxl:WindowKeyList>
              <dxl:WindowKey>
                <dxl:SortingColumnList/>
                <dxl:WindowFrame FrameSpec="Range" ExclusionStrategy="Nulls">
                  <dxl:TrailingEdge TrailingBoundary="UnboundedPreceding"/>
                  <dxl:LeadingEdge LeadingBoundary="CurrentRow"/>
                </dxl:WindowFrame>
              </dxl:WindowKey>
            </dxl:WindowKeyList>
          </dxl:Window>
        </dxl:Result>
      </dxl:GatherMotion>
    </dxl:Plan>
  </dxl:Thread>
</dxl:DXLMessage>
